Why does it take 3 copies of 1/6 to show the same amount as 1 copy of 1/2? explain your answer in words and pictures.

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?